What color to paint the bottom of my tank?

[Trigger Man]

I run bare bottom tanks and with this new build the tank did not come with the foam glued to the bottom of it. So now I can see the plywood below the tank glass, so that needs to be addressed. I have debated between painting the plywood white (clean look), a purple pink hue (for hiding the coralline from standing out when the tank is mature), Black (can make some things pop), or a greyish brown (to hopefully hide rubble and crap).
What would you do?